Compared with American firms Germany ones______.

Aluminum pistons have _____ coefficient of thermal expansion compared with those of cast iron.

Compared to alternative energy, one of the disadvantages of fossil fuels is ______.A．Minin

Compared with their peers, kids with professional parents learn much more because they____

Compared with public television, commercial television______.A．broadcast programs which do

Compared with visiting a social networking site, when dealing with health tracking,______.

Compared to the traditional classes, one advantage of online classes is that they______.A．